/*
- * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_BTREE_H__
#define __XFS_BTREE_H__
/*
* Short form header: space allocation btrees.
*/
-typedef struct xfs_btree_sblock
-{
- __uint32_t bb_magic; /* magic number for block type */
- __uint16_t bb_level; /* 0 is a leaf */
- __uint16_t bb_numrecs; /* current # of data records */
- xfs_agblock_t bb_leftsib; /* left sibling block or NULLAGBLOCK */
- xfs_agblock_t bb_rightsib; /* right sibling block or NULLAGBLOCK */
+typedef struct xfs_btree_sblock {
+ __be32 bb_magic; /* magic number for block type */
+ __be16 bb_level; /* 0 is a leaf */
+ __be16 bb_numrecs; /* current # of data records */
+ __be32 bb_leftsib; /* left sibling block or NULLAGBLOCK */
+ __be32 bb_rightsib; /* right sibling block or NULLAGBLOCK */
} xfs_btree_sblock_t;
/*
* Long form header: bmap btrees.
*/
-typedef struct xfs_btree_lblock
-{
- __uint32_t bb_magic; /* magic number for block type */
- __uint16_t bb_level; /* 0 is a leaf */
- __uint16_t bb_numrecs; /* current # of data records */
- xfs_dfsbno_t bb_leftsib; /* left sibling block or NULLDFSBNO */
- xfs_dfsbno_t bb_rightsib; /* right sibling block or NULLDFSBNO */
+typedef struct xfs_btree_lblock {
+ __be32 bb_magic; /* magic number for block type */
+ __be16 bb_level; /* 0 is a leaf */
+ __be16 bb_numrecs; /* current # of data records */
+ __be64 bb_leftsib; /* left sibling block or NULLDFSBNO */
+ __be64 bb_rightsib; /* right sibling block or NULLDFSBNO */
} xfs_btree_lblock_t;
/*
*/
typedef struct xfs_btree_hdr
{
- __uint32_t bb_magic; /* magic number for block type */
- __uint16_t bb_level; /* 0 is a leaf */
- __uint16_t bb_numrecs; /* current # of data records */
+ __be32 bb_magic; /* magic number for block type */
+ __be16 bb_level; /* 0 is a leaf */
+ __be16 bb_numrecs; /* current # of data records */
} xfs_btree_hdr_t;
-typedef struct xfs_btree_block
-{
+typedef struct xfs_btree_block {
xfs_btree_hdr_t bb_h; /* header */
- union {
- struct {
- xfs_agblock_t bb_leftsib;
- xfs_agblock_t bb_rightsib;
- } s; /* short form pointers */
+ union {
+ struct {
+ __be32 bb_leftsib;
+ __be32 bb_rightsib;
+ } s; /* short form pointers */
struct {
- xfs_dfsbno_t bb_leftsib;
- xfs_dfsbno_t bb_rightsib;
- } l; /* long form pointers */
- } bb_u; /* rest */
+ __be64 bb_leftsib;
+ __be64 bb_rightsib;
+ } l; /* long form pointers */
+ } bb_u; /* rest */
} xfs_btree_block_t;
/*
/*
* Boolean to select which form of xfs_btree_block_t.bb_u to use.
*/
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BTREE_LONG_PTRS)
-int xfs_btree_long_ptrs(xfs_btnum_t btnum);
-#define XFS_BTREE_LONG_PTRS(btnum) ((btnum) == XFS_BTNUM_BMAP)
-#else
#define XFS_BTREE_LONG_PTRS(btnum) ((btnum) == XFS_BTNUM_BMAP)
-#endif
/*
* Magic numbers for btree blocks.
struct xfs_trans *bc_tp; /* transaction we're in, if any */
struct xfs_mount *bc_mp; /* file system mount struct */
union {
- xfs_alloc_rec_t a;
+ xfs_alloc_rec_incore_t a;
xfs_bmbt_irec_t b;
xfs_inobt_rec_t i;
} bc_rec; /* current insert/search record value */
/*
* Convert from buffer to btree block header.
*/
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_BLOCK)
-xfs_btree_block_t *xfs_buf_to_block(struct xfs_buf *bp);
-#define XFS_BUF_TO_BLOCK(bp) xfs_buf_to_block(bp)
-#else
-#define XFS_BUF_TO_BLOCK(bp) ((xfs_btree_block_t *)(XFS_BUF_PTR(bp)))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_LBLOCK)
-xfs_btree_lblock_t *xfs_buf_to_lblock(struct xfs_buf *bp);
-#define XFS_BUF_TO_LBLOCK(bp) xfs_buf_to_lblock(bp)
-#else
-#define XFS_BUF_TO_LBLOCK(bp) ((xfs_btree_lblock_t *)(XFS_BUF_PTR(bp)))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_SBLOCK)
-xfs_btree_sblock_t *xfs_buf_to_sblock(struct xfs_buf *bp);
-#define XFS_BUF_TO_SBLOCK(bp) xfs_buf_to_sblock(bp)
-#else
-#define XFS_BUF_TO_SBLOCK(bp) ((xfs_btree_sblock_t *)(XFS_BUF_PTR(bp)))
-#endif
+#define XFS_BUF_TO_BLOCK(bp) ((xfs_btree_block_t *)XFS_BUF_PTR(bp))
+#define XFS_BUF_TO_LBLOCK(bp) ((xfs_btree_lblock_t *)XFS_BUF_PTR(bp))
+#define XFS_BUF_TO_SBLOCK(bp) ((xfs_btree_sblock_t *)XFS_BUF_PTR(bp))
+
#ifdef __KERNEL__
xfs_btree_cur_t *cur, /* btree cursor */
int level); /* level to change */
-/*
- * Retrieve the block pointer from the cursor at the given level.
- * This may be a bmap btree root or from a buffer.
- */
-xfs_btree_block_t * /* generic btree block pointer */
-xfs_btree_get_block(
- xfs_btree_cur_t *cur, /* btree cursor */
- int level, /* level in btree */
- struct xfs_buf **bpp); /* buffer containing the block */
-
/*
* Get a buffer for the block, return it with no data read.
* Long-form addressing.
/*
* Min and max functions for extlen, agblock, fileoff, and filblks types.
*/
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_EXTLEN_MIN)
-xfs_extlen_t xfs_extlen_min(xfs_extlen_t a, xfs_extlen_t b);
-#define XFS_EXTLEN_MIN(a,b) xfs_extlen_min(a,b)
-#else
#define XFS_EXTLEN_MIN(a,b) \
((xfs_extlen_t)(a) < (xfs_extlen_t)(b) ? \
- (xfs_extlen_t)(a) : (xfs_extlen_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_EXTLEN_MAX)
-xfs_extlen_t xfs_extlen_max(xfs_extlen_t a, xfs_extlen_t b);
-#define XFS_EXTLEN_MAX(a,b) xfs_extlen_max(a,b)
-#else
+ (xfs_extlen_t)(a) : (xfs_extlen_t)(b))
#define XFS_EXTLEN_MAX(a,b) \
((xfs_extlen_t)(a) > (xfs_extlen_t)(b) ? \
- (xfs_extlen_t)(a) : (xfs_extlen_t)(b))
-#endif
-
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGBLOCK_MIN)
-xfs_agblock_t xfs_agblock_min(xfs_agblock_t a, xfs_agblock_t b);
-#define XFS_AGBLOCK_MIN(a,b) xfs_agblock_min(a,b)
-#else
+ (xfs_extlen_t)(a) : (xfs_extlen_t)(b))
#define XFS_AGBLOCK_MIN(a,b) \
((xfs_agblock_t)(a) < (xfs_agblock_t)(b) ? \
- (xfs_agblock_t)(a) : (xfs_agblock_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGBLOCK_MAX)
-xfs_agblock_t xfs_agblock_max(xfs_agblock_t a, xfs_agblock_t b);
-#define XFS_AGBLOCK_MAX(a,b) xfs_agblock_max(a,b)
-#else
+ (xfs_agblock_t)(a) : (xfs_agblock_t)(b))
#define XFS_AGBLOCK_MAX(a,b) \
((xfs_agblock_t)(a) > (xfs_agblock_t)(b) ? \
- (xfs_agblock_t)(a) : (xfs_agblock_t)(b))
-#endif
-
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILEOFF_MIN)
-xfs_fileoff_t xfs_fileoff_min(xfs_fileoff_t a, xfs_fileoff_t b);
-#define XFS_FILEOFF_MIN(a,b) xfs_fileoff_min(a,b)
-#else
+ (xfs_agblock_t)(a) : (xfs_agblock_t)(b))
#define XFS_FILEOFF_MIN(a,b) \
((xfs_fileoff_t)(a) < (xfs_fileoff_t)(b) ? \
- (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILEOFF_MAX)
-xfs_fileoff_t xfs_fileoff_max(xfs_fileoff_t a, xfs_fileoff_t b);
-#define XFS_FILEOFF_MAX(a,b) xfs_fileoff_max(a,b)
-#else
+ (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b))
#define XFS_FILEOFF_MAX(a,b) \
((xfs_fileoff_t)(a) > (xfs_fileoff_t)(b) ? \
- (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b))
-#endif
-
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILBLKS_MIN)
-xfs_filblks_t xfs_filblks_min(xfs_filblks_t a, xfs_filblks_t b);
-#define XFS_FILBLKS_MIN(a,b) xfs_filblks_min(a,b)
-#else
+ (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b))
#define XFS_FILBLKS_MIN(a,b) \
((xfs_filblks_t)(a) < (xfs_filblks_t)(b) ? \
- (xfs_filblks_t)(a) : (xfs_filblks_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILBLKS_MAX)
-xfs_filblks_t xfs_filblks_max(xfs_filblks_t a, xfs_filblks_t b);
-#define XFS_FILBLKS_MAX(a,b) xfs_filblks_max(a,b)
-#else
+ (xfs_filblks_t)(a) : (xfs_filblks_t)(b))
#define XFS_FILBLKS_MAX(a,b) \
((xfs_filblks_t)(a) > (xfs_filblks_t)(b) ? \
- (xfs_filblks_t)(a) : (xfs_filblks_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_SANITY_CHECK)
-int xfs_fsb_sanity_check(struct xfs_mount *mp, xfs_fsblock_t fsb);
-#define XFS_FSB_SANITY_CHECK(mp,fsb) xfs_fsb_sanity_check(mp,fsb)
-#else
+ (xfs_filblks_t)(a) : (xfs_filblks_t)(b))
+
#define XFS_FSB_SANITY_CHECK(mp,fsb) \
(XFS_FSB_TO_AGNO(mp, fsb) < mp->m_sb.sb_agcount && \
- XFS_FSB_TO_AGBNO(mp, fsb) < mp->m_sb.sb_agblocks)
-#endif
-
-/*
- * Macros to set EFSCORRUPTED & return/branch.
- */
-#define XFS_WANT_CORRUPTED_GOTO(x,l) \
- { \
- int fs_is_ok = (x); \
- ASSERT(fs_is_ok); \
- if (unlikely(!fs_is_ok)) { \
- XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_GOTO", \
- XFS_ERRLEVEL_LOW, NULL); \
- error = XFS_ERROR(EFSCORRUPTED); \
- goto l; \
- } \
- }
-
-#define XFS_WANT_CORRUPTED_RETURN(x) \
- { \
- int fs_is_ok = (x); \
- ASSERT(fs_is_ok); \
- if (unlikely(!fs_is_ok)) { \
- XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_RETURN", \
- XFS_ERRLEVEL_LOW, NULL); \
- return XFS_ERROR(EFSCORRUPTED); \
- } \
- }
+ XFS_FSB_TO_AGBNO(mp, fsb) < mp->m_sb.sb_agblocks)
#endif /* __XFS_BTREE_H__ */
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